标签：__ 函数 gym ActionWrapper step env action self

本文说的这个gym.ActionWrapper继承类的问题和gym.ObservationWrapper继承类的问题性质是一样的，具体看：

gym.ObservationWrapper使用时的注意点——reset和step函数可以覆盖observation函数

地址：

https://www.cnblogs.com/devilmaycry812839668/p/16729162.html

 

 

 

==========================================

 

 

代码：

import gym


class Wrapper(gym.ActionWrapper):
    def __init__(self, env):
        super(Wrapper, self).__init__(env)

    # def step(self, action):
    #     print("step execute!!!")
    #     obs, reward, is_done, info = self.env.step(action)
    #     return obs, reward, is_done, info

    def action(self, action):
        print("action execute!!!")
        return action


env=gym.make("CartPole-v0")
env = Wrapper(env)
env.reset()
env.step(0)

运行结果：

 

 

 

 

 

import gym


class Wrapper(gym.ActionWrapper):
    def __init__(self, env):
        super(Wrapper, self).__init__(env)

    def step(self, action):
        print("step execute!!!")
        obs, reward, is_done, info = self.env.step(action)
        return obs, reward, is_done, info

    def action(self, action):
        print("action execute!!!")
        return action


env=gym.make("CartPole-v0")
env = Wrapper(env)
env.reset()
env.step(0)

运行结果：

 

 

 

 

==========================================

 

 

 

具体原理，看下gym.ActionWrapper的代码就很清楚了：

 

 

标签：__,函数,gym,ActionWrapper,step,env,action,self
From： https://www.cnblogs.com/devilmaycry812839668/p/16729214.html